CN219825526U - A rainwater ecological garden structure for greening the landscape - Google Patents

Abstract

The utility model relates to a rainwater ecological garden structure for greening landscapes, which includes a pool body of a rainwater ecological garden. The pool body includes a water storage layer, a planting layer, a filter layer, a gravel layer and a permeable layer arranged in sequence from top to bottom. , there is an overflow well in the low-lying middle part of the pool body, water storage tanks are buried on both sides of the lower part of the pool body, and perforated pipes are buried in the permeable layer. The bottom of the overflow well is connected to the middle part of the perforated pipe, and the two ends of the perforated pipe are connected to The water storage tank is connected, and an overflow port connected to the municipal drainage pipe network is provided in the middle of the overflow well. A water pump is provided above the water storage tank, and the water pump is connected to the water storage tank. An irrigation drip pipe is buried in the aquifer, and the irrigation drip pipe is connected to the water storage tank. The water pump is connected. By filtering rainwater layer by layer, the purpose of retaining rainwater is achieved while filtering rainwater. The perforated pipe collects the filtered rainwater and transports it to the water storage tank. In the rainy season, the water storage tank is mainly used to retain rainwater. In the dry season, the water storage tank is used to retain rainwater. Water tanks are used to recycle rainwater to save water resources.

Description

A rainwater ecological garden structure for greening the landscape

Technical field

The utility model relates to the technical field of urban rainwater treatment, and in particular to a rainwater ecological garden structure used for greening landscapes.

Background technique

Sponge city is a new generation of urban stormwater management concept. It means that the city can be like a sponge and have good elasticity in adapting to environmental changes and responding to natural disasters caused by rainwater. It can also be called a "water elastic city".

An important component of sponge cities is the rainwater ecological gardens distributed throughout the city. Rainwater ecological gardens often exist as part of the urban green landscape. Rainwater ecological gardens are also called bioretention areas, which refer to the planting of rainwater ecological gardens in the garden green landscape. Low-lying areas of trees or shrubs, covered by bark or ground cover, which replenish groundwater and reduce the peak of stormwater surface runoff by retaining rainwater and infiltrating it. It can also reduce pollution through processes such as adsorption, degradation, ion exchange, and volatilization. .

Rainwater ecological gardens need to cope with both the dry season and the rainy season. In most areas of our country, the rainy season occupies a limited time throughout the year. Therefore, rainwater ecological gardens tend to prefer drought-tolerant plants in the selection of plants. However, most of the precipitation throughout the year will It is concentrated in the rainy season, so when the rainy season comes, the rainwater cannot quickly penetrate into the soil and filling layer of the rainwater ecological garden, causing the plant roots in low-lying areas to be soaked in water for a long time, which is not conducive to the growth of plants; at the same time, the rainwater ecological garden is in During the dry season, municipal tap water needs to be frequently used to water plants, which is not conducive to water conservation.

Contents of the invention

The technical problem to be solved by this utility model is to provide a rainwater ecological garden structure for greening landscapes in view of the above-mentioned deficiencies in the prior art.

The technical solution of the utility model to solve the above technical problems is as follows: a rainwater ecological garden structure for greening landscapes, including a rainwater ecological garden pool body, which includes a water storage layer and a planting layer arranged in sequence from top to bottom. , filter layer, gravel layer and water-permeable layer, an overflow well is provided in the low-lying middle part of the pool body, the upper end of the overflow well extends out of the water storage layer, and there are two buried holes on both sides of the lower part of the pool body. Water storage tank, a perforated pipe is buried in the water permeable layer, the bottom of the overflow well is connected to the middle part of the perforated pipe, the two ends of the perforated pipe are connected to the water storage tank respectively, and the middle part of the overflow well is connected to the water storage tank. An overflow port connected to the municipal drainage pipe network is provided. A water pump is provided above the water storage tank. The water pump is connected to the water storage tank. An irrigation drip pipe is buried in the aquifer. The irrigation drip pipe Connected to the water pump.

The beneficial effects of the utility model are: the rainwater ecological garden structure used for greening the landscape of the utility model filters rainwater layer by layer through the water storage layer, planting layer, filter layer, gravel layer and water permeable layer. At the same time, the purpose of retaining rainwater is also achieved. The perforated pipe collects filtered rainwater and transports it to the water storage tank. In the rainy season, the water storage tank is mainly used to retain rainwater. In the dry season, the water storage tank It is used to recycle rainwater, pump out the rainwater through the water pump, and use the irrigation dripper to water the plants to save the use of water resources. When the water storage tank is filled with water, excess water will be evaporated from the water. Enter the bottom of the overflow well. When the water level in the overflow well exceeds the overflow port, excess water will be discharged from the overflow port to prevent the connection between the water storage tank and the perforated pipe from being damaged by water. It was damaged due to excessive pressure and leaked water.

On the basis of the above technical solution, the present utility model can also make the following improvements:

Further: a water inlet is provided on the top of the overflow well, the water inlet is provided around the outside of the top of the overflow well, and the water inlet is higher than the aquifer.

The beneficial effect of the above further solution is that by setting up the water inlet, the accumulated water overflowing the water inlet can be directly introduced into the municipal drainage pipe network, preventing plant roots in low-lying areas from being soaked in water for a long time, and also avoiding The rainwater ecological garden was completely flooded by precipitation that exceeded its treatment capacity.

Further: the water inlet is provided with a filter screen for blocking floating garbage.

The beneficial effect of the above further solution is that by arranging the filter screen, floating garbage can be prevented from entering the overflow well through the water inlet and causing blockage of the municipal drainage pipe network.

Further: the overflow well is provided with a check valve below the overflow port, the height of the overflow port is between the height of the water permeable layer and the height of the aquifer, and the overflow port The location is higher than the municipal drainage network.

The beneficial effect of the above further solution is that by setting the check valve, unfiltered rainwater can be prevented from flowing into the perforated pipe, and unfiltered rainwater can be prevented from contaminating groundwater after passing through the permeable layer; at the same time, when the When the water storage tank is filled with water, the excess water can push open the valve disc of the check valve, allowing water to enter the overflow port, and enter the municipal drainage pipe network through the overflow port, preventing the municipal drainage pipe from being blocked. Rainwater flows back into the net.

Further: the water pump is arranged on the surface on both sides of the aquifer, and the irrigation drip pipe is arranged beside the plants on the aquifer, and the connection between the irrigation drip pipe and the water pump A mesh filter is provided.

The beneficial effects of the above further solution are: by arranging the water pump on the surface on both sides of the aquifer, on the one hand it is convenient to install and maintain, and on the other hand it is convenient to ensure that the water pump is in a better working environment. The irrigation drip pipe is arranged beside the plants on the aquifer, so that the plants can be watered slowly and evenly, so that most of the water can stay in the aquifer and the planting layer. By setting the screen The mesh filter can easily filter the water pumped out by the water pump to avoid clogging the irrigation drip pipe.

Further: the top of the water storage tank is not higher than the water permeable layer.

The beneficial effect of the above further solution is that by setting the top of the water storage tank to be no higher than the water permeable layer, it is easy to pass through the water storage layer, planting layer, filter layer, gravel layer and water permeable layer layer by layer. The filtered rainwater smoothly enters the water storage tank through the pressure difference.

Further: the aquifer is paved with several pebbles, and the filter layer is filled with several zeolites.

Further: the water permeable layer is formed by filling a number of gravels, and the thickness of the water permeable layer is not less than twice the diameter of the perforated pipe, and a geotextile is laid between the water permeable layer and the gravel layer, so A geotextile is laid between the filter layer and the gravel layer, and a geotextile is laid between the pool body and the soil on both sides.

The beneficial effect of the above further solution is that by arranging the geotextile, the gravel can be prevented from being washed into the permeable layer 5 and blocking the gaps between the gravel, which is beneficial to ensuring the stability of the pool structure.

Further: the thickness of the planting layer is 25-50cm, the thickness of the filtering layer is 30-60cm, and the thickness of the gravel layer is 20-40cm.

Description of the drawings

Figure 1 is a schematic structural diagram of a rainwater ecological garden structure used for greening landscapes according to an embodiment of the present invention.

In the drawings, the parts represented by each number are listed as follows:

1. Aquifer, 2. Planting layer, 3. Filter layer, 4. Gravel layer, 5. Permeable layer, 6. Overflow well, 7. Water storage tank, 8. Perforated pipe, 9. Water pump, 10. Irrigation dropper;

601. Overflow port, 602. Water inlet, 603. Check valve.

Detailed ways

The principles and features of the present utility model are described below with reference to the accompanying drawings. The examples cited are only used to explain the utility model and are not intended to limit the scope of the utility model.

As shown in Figure 1, a rainwater ecological garden structure for greening landscapes includes a rainwater ecological garden pool body. The pool body includes a water storage layer 1, a planting layer 2, and a filtering layer 3 arranged in sequence from top to bottom. , gravel layer 4 and water permeable layer 5. An overflow well 6 is provided in the low-lying middle part of the pool body. The upper end of the overflow well 6 extends out of the water storage layer 1. Both sides of the lower part of the pool body are respectively A water storage tank 7 is buried, and a perforated pipe 8 is buried in the water permeable layer 5. The bottom of the overflow well 6 is connected to the middle part of the perforated pipe 8, and both ends of the perforated pipe 8 are connected to the water storage tank 7 respectively. connected, an overflow port 601 connected to the municipal drainage pipe network is provided in the middle of the overflow well 6, and a water pump 9 is provided above the water storage tank 7, and the water pump 9 is connected to the water storage tank 7. An irrigation drip pipe 10 is embedded in the aquifer 1 , and the irrigation drip pipe 10 is connected with the water pump 9 .

The utility model's rainwater ecological garden structure for greening landscapes filters rainwater layer by layer through the water storage layer 1, planting layer 2, filter layer 3, gravel layer 4 and water permeable layer 5. While filtering rainwater, it also achieves In order to retain rainwater, the perforated pipe 8 collects filtered rainwater and transports it to the water storage tank 7. During the rainy season, the water storage tank 7 is mainly used to retain rainwater. During the dry season, the water storage tank 7 It is used to recycle rainwater, pump out the rainwater through the water pump 9, and use the irrigation dripper 10 to water the plants to save the use of water resources. When the water storage tank 7 is filled with water, the excess water It will enter from the bottom of the overflow well 6. When the water level in the overflow well 6 exceeds the overflow port 601, the excess water will be discharged from the overflow port 601 to prevent the water storage tank 7 from colliding with the overflow port 601. The connection point of the perforated pipe 8 is damaged and water seeps due to excessive water pressure.

In one or more embodiments of the present invention, a water inlet 602 is provided on the top of the overflow well 6, and the water inlet 602 is provided around the outside of the top of the overflow well 6, and the water inlet 602 higher than the aquifer 1. By arranging the water inlet 602, the accumulated water overflowing the water inlet 602 can be directly introduced into the municipal drainage pipe network, preventing the roots of plants in low-lying areas from being soaked in water for a long time, and also preventing the rainwater ecological garden from being exceeded. Ability of precipitation to completely submerge.

In practice, the height of the water inlet 602 above the aquifer 1 is 15-30 cm. Optionally, the height of the water inlet 602 above the aquifer 1 is 20 cm.

Optionally, in one or more embodiments of the present invention, a filter screen for blocking floating garbage is provided at the water inlet 602 . By providing the filter screen, floating garbage can be prevented from entering the overflow well 6 through the water inlet 602 and causing blockage of the municipal drainage pipe network.

In one or more embodiments of the present invention, a check valve 603 is provided on the overflow well 6 below the overflow port 601 , and the height of the overflow port 601 is located on the water permeable layer 5 and the height of the aquifer 1, and the overflow opening 601 is located higher than the municipal drainage pipe network. When rainwater flows into the water inlet of the overflow well 6, because the rainwater has not passed through the water storage layer 1, the planting layer 2, the filter layer 3, the gravel layer 4 and the water permeable layer 5, Filtering is carried out layer by layer. If rainwater is discharged directly into the perforated pipe 8, the water in the water permeable layer 5 and the water storage tank 7 may be polluted. By setting the check valve 603, it is possible to prevent unfiltered rainwater from flowing into the perforated pipe 8, thereby preventing unfiltered rainwater from passing through the permeable layer 5 and contaminating groundwater; at the same time, when the water storage tank 7 is filled with water When full, the excess water can push open the valve disc of the check valve 603, allowing water to enter the overflow port 601, and enter the municipal drainage pipe network through the overflow port 601, thereby preventing the municipal drainage pipe network from being blocked. Rainwater pours in.

It should be pointed out that in the embodiment of the present invention, the opening direction of the check valve flap is toward the top of the overflow well.

In one or more embodiments of the present invention, the water pump 9 is arranged on the ground on both sides of the aquifer 1 , and the irrigation dripper 10 is arranged next to the plants on the aquifer 1 side, and a screen filter is provided at the connection between the irrigation drip pipe 10 and the water pump 9 .

By arranging the water pump 9 on the ground surface on both sides of the aquifer 1, on the one hand, it is convenient to install and maintain, and on the other hand, it is convenient to ensure that the water pump 9 is in a better working environment. By placing the irrigation drip pipe 10 It is arranged beside the plants on the aquifer 1, so that the plants can be watered slowly and evenly, so that most of the water can stay in the aquifer 1 and the planting layer 2; because the rainwater ecological garden has good water permeability, when irrigating plants by directly spraying water, most of the water will pass through the aquifer 1 and the planting layer 2 in a short time, making it impossible for the plants to absorb it, wasting water resources, and the irrigation The dropper 10 can water the plants slowly and evenly, so that most of the water can stay in the aquifer and the planting layer; by setting up the screen filter, the water pumped out by the water pump 9 can be filtered conveniently , to avoid clogging the irrigation drip pipe 10.

Optionally, in one or more embodiments of the present invention, the top of the water storage tank 7 is not higher than the water permeable layer 5 . The beneficial effect of the above further solution is that by setting the top of the water storage tank 7 not higher than the water permeable layer 5, it is easy to pass through the water storage layer 1, planting layer 2, filter layer 3, and gravel layer. The rainwater filtered layer by layer by 4 and water permeable layer 5 smoothly enters the water storage tank 7 through the pressure difference.

In one or more embodiments of the present invention, the water storage layer 1 is paved with several pebbles, and the filter layer 3 is filled with several zeolites.

In one or more embodiments of the present invention, the water permeable layer 5 is formed by filling a number of gravels, and the thickness of the water permeable layer 5 is not less than twice the diameter of the perforated pipe 8. The water permeable layer 5 A geotextile is laid between 5 and the gravel layer 4, a geotextile is laid between the filter layer 3 and the gravel layer 4, and a geotextile is laid between the pool body and the soil on both sides. By arranging the geotextile, the gravel can be prevented from being washed into the permeable layer 5 and blocking the gaps between the gravel, which is beneficial to ensuring the stability of the pool structure. In the embodiment of the present utility model, the diameter of the perforated pipe 8 is 10cm, and the thickness of the water permeable layer 5 is 25cm.

In one or more embodiments of the present invention, the thickness of the planting layer 2 is 25-50cm, the thickness of the filter layer 3 is 30-60cm, and the thickness of the gravel layer 4 is 20-40cm.

It can be a U-shaped Andy, the thickness of the planting layer 2 is 40cm, the plant roots grow in the planting layer 2, the thickness of the filter layer 3 is 40cm, and the thickness of the gravel layer 4 is 30cm.

The working principle of the rainwater ecological garden structure used for greening landscapes of this utility model is as follows:

During the dry season, a small amount of precipitation is filtered layer by layer through the aquifer 1, planting layer 2, filter layer 3, gravel layer 4 and permeable layer 5 and then enters the perforated pipe 8. Finally, the perforated pipe 8 is introduced into the water storage tank 7. When there is no rainfall for a long time, the water in the water storage tank 7 is pumped out through the water pump 9, and the water is sent to the irrigation dripper 10 to water the plants. Since the water directly enters the aquifer 1 through the irrigation dripper 10, and the water outlet speed of the irrigation dripper 10 is It is relatively slow, so water can be fully absorbed by the soil of planting layer 2 after it penetrates into planting layer 2;

During the rainy season, only part of the large amount of precipitation passes through the aquifer layer 1, planting layer 2, filter layer 3, gravel layer 4 and permeable layer 5 and enters the water storage tank 7. There is still a large amount of accumulated water in the rainwater ecological garden. In the low-lying area, when the water level reaches the height of the water inlet 602, the accumulated water will enter the overflow well 6. Due to the obstruction of the check valve 603, the accumulated water will enter the municipal drainage pipe network through the overflow opening 601, speeding up drainage. speed. At the same time, when the water storage tank 7 is filled, the excess water in the permeable layer 5 will gradually fill the perforated pipe 8. If the perforated pipe 8 is filled, the water will enter the bottom of the overflow well 6 through the perforated pipe 8. When the water When reaching the height of the check valve 603, if the water pressure below the check valve 603 is greater than the water pressure above the check valve 603, the check valve 603 will open and release the water below it. At this time, the check valve 603 plays a safety role. The function of the valve limits the maximum water pressure in the water storage tank 7 and the perforated pipe 8.

The utility model's rainwater ecological garden structure for greening landscapes has the following advantages:

(1) This utility model filters rainwater layer by layer through the aquifer layer 1, planting layer 2, filter layer 3, gravel layer 4 and permeable layer 5. While filtering rainwater, it also achieves the purpose of retaining rainwater. The perforated pipe 8 The filtered rainwater is collected and transported to the water storage tank 7. In the rainy season, the water storage tank 7 is mainly used to retain rainwater. In the dry season, the water storage tank 7 is used to recycle rainwater and pump out the rainwater through the water pump 9. Use the irrigation dripper 10 to water the plants to save water use;

(2) The overflow well 6 of the present utility model can directly guide the accumulated water overflowing its water inlet 602 into the municipal drainage pipe network, preventing plant roots in low-lying areas from being soaked in water for a long time, and also preventing rainwater from being immersed in the ecological garden. Being completely flooded by more precipitation than they can handle;

(3) The water storage tank 7 of the present invention is connected to the overflow well 6 through the perforated pipe 8. When the water storage tank 7 is filled with water, the excess water will enter the overflow well 6 from the bottom of the overflow well 6. When the water level in the overflow well 6 overflows the overflow opening 601, excess water will be discharged from the overflow opening 601 to prevent the connection between the water storage tank 7 and the perforated pipe 8 from being damaged and causing water seepage due to excessive water pressure.

The above descriptions are only preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model shall be included in this utility model. Within the protection scope of utility model.

Claims (9)

1. A rainwater ecological garden structure for greening landscapes, characterized by: including a pool body of a rainwater ecological garden, which body includes a water storage layer (1) and a planting layer (2) arranged in sequence from top to bottom. , filter layer (3), gravel layer (4) and permeable layer (5). An overflow well (6) is provided in the low-lying middle part of the pool body, and the upper end of the overflow well (6) extends out of the In the water storage layer (1), water storage tanks (7) are buried on both sides of the lower part of the pool body, and perforated pipes (8) are buried in the permeable layer (5). The bottom of the overflow well (6) is connected to The middle part of the perforated pipe (8) is connected to each other, and both ends of the perforated pipe (8) are connected to the water storage tank (7) respectively. The middle part of the overflow well (6) is connected to the municipal drainage pipe network. The overflow port (601) is provided with a water pump (9) above the water storage tank (7). The water pump (9) is connected with the water storage tank (7). There is a water pump (9) buried in the water storage layer (1). There is an irrigation drip pipe (10), and the irrigation drip pipe (10) is connected with the water pump (9). 2. The rainwater ecological garden structure for greening the landscape according to claim 1, characterized in that: a water inlet (602) is provided at the top of the overflow well (6), and the water inlet (602) surrounds the surrounding area. The overflow well (6) is provided on the top outside, and the water inlet (602) is higher than the aquifer (1). 3. The rainwater ecological garden structure for greening the landscape according to claim 2, characterized in that: the water inlet (602) is provided with a filter screen for blocking floating garbage. 4. The rainwater ecological garden structure for greening the landscape according to claim 2, characterized in that: the overflow well (6) is provided with a check valve (603) below the overflow port (601). ), the height of the overflow opening (601) is between the height of the permeable layer (5) and the height of the aquifer (1), and the location of the overflow opening (601) is higher than the municipal drainage Pipe Network. 5. The rainwater ecological garden structure for greening the landscape according to claim 1, characterized in that: the water pump (9) is arranged on the surface on both sides of the aquifer (1), and the irrigation drip The pipe (10) is arranged beside the plants on the aquifer (1), and a mesh filter is provided at the connection between the irrigation drip pipe (10) and the water pump (9). 6. The rainwater ecological garden structure for greening landscapes according to claim 1, characterized in that: the top of the water storage tank (7) is not higher than the water permeable layer (5). 7. The rainwater ecological garden structure for greening the landscape according to claim 1, characterized in that: the water storage layer (1) is paved with a number of pebbles, and the filter layer (3) is filled with a number of zeolites. 8. The rainwater ecological garden structure for greening the landscape according to claim 1, characterized in that: the water permeable layer (5) is formed by filling a number of gravels, and the thickness of the water permeable layer (5) is not less than the twice the diameter of the perforated pipe (8), a geotextile is laid between the water permeable layer (5) and the gravel layer (4), the filter layer (3) and the gravel layer (4) ), a geotextile is laid between the pool body and the soil on both sides. 9. The rainwater ecological garden structure for greening the landscape according to any one of claims 1-8, characterized in that: the thickness of the planting layer (2) is 25-50cm, and the thickness of the filtering layer (3) The thickness is 30-60cm, and the thickness of the gravel layer (4) is 20-40cm.