CN207794243U - Sunk type greenery patches reverse osmosis layer automatic flushing device in a kind of sponge city - Google Patents

Abstract

The utility model discloses an automatic flushing device for a reverse osmosis layer of a sinking green space in a sponge city. The sunken green space includes a soil layer, a reverse osmosis layer and a support layer arranged in sequence from top to bottom. The side of the sunken green space is provided with an inclined partition wall, and the bottom of the sunken green space is provided with a water storage channel. A drainage channel is provided at the bottom of the storage channel, and a flushing mechanism for flushing the reverse osmosis layer is also included, which can flush the reverse osmosis layer to maintain filtration efficiency and cleanliness.

Description

An automatic flushing device for sunken green space reverse osmosis layer in sponge city

technical field

The utility model relates to the technical field of sponge city devices, in particular to a sinking type automatic flushing device for a reverse osmosis layer in a sponge city.

Background technique

Sponge city refers to a city that can be like a sponge and has good flexibility 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 for use when needed. Among them, the sunken green space is an ecological and environmentally friendly rainwater infiltration storage facility. Its water level is lower than that of the urban road surface. When it rains, the sunken green space can reduce part of the ground runoff, share road water, and effectively prevent urban waterlogging.

At present, the Chinese utility model patent with the authorized announcement number CN206521805U discloses a sinking green space drainage system based on sponge city technology, which includes a partition wall, a soil layer, a geotextile, a gravel layer, a partition wall, a permeable pipe, a connecting hole, support plate, waterproof layer, connecting pipe and vegetation layer, a support plate is fixed between the two partition walls, a reservoir is formed above the support plate, and a water storage channel is correspondingly provided with a waterproof layer, and the support plate A crushed stone layer is arranged below the wall, and a connecting pipe is arranged in the two partition walls. The upper end of the connecting pipe communicates with the water storage channel, and the lower end of the connecting pipe leads to the crushed stone layer.

Although this sunken green space drainage system can improve drainage efficiency and achieve the purpose of drainage, water storage and water purification, the rainwater flowing into urban roads often contains a large amount of pollutants such as sediment and oil. A large amount of intercepted pollutants often accumulate in the gravel layer, which affects the filtering effect. It is necessary to dig out the ground to wash the gravel layer, which leads to high maintenance costs and damages the urban landscape.

Utility model content

The purpose of the utility model is to provide an automatic flushing device for the reverse osmosis layer of the sunken green space in the sponge city, which has the advantage of being able to automatically flush the reverse osmosis layer and maintain the filtration efficiency and cleanliness.

The technical purpose of the utility model is achieved through the following technical solutions: an automatic flushing device for the reverse osmosis layer of the sunken green space in the sponge city, including the sunken green space, the water level of the sunken green space is lower than the road level , the sunken green space includes a soil layer, a reverse osmosis layer and a support layer arranged in sequence from top to bottom, the side of the sunken green space is provided with an inclined partition wall, and the bottom of the sunken green space is provided with a storage The water channel is provided with a drainage channel at the bottom of the water storage channel, and also includes a flushing mechanism for flushing the reverse osmosis layer.

Through the above-mentioned technical scheme, during the urban rainfall process, the rainwater drops on the sunken green space, is filtered by the soil layer and the reverse osmosis layer, and flows into the storage canal for collection. The rainwater collected in the storage canal can be used in dry weather Water the vegetation grown on the soil layer. When there is excessive rainwater in the storage channel, the excess rainwater overflows the storage tank and is discharged into the municipal pipe network by the drainage channel. The reverse osmosis layer is flushed by the flushing mechanism to remove the dirt accumulated in the reverse osmosis layer and keep the reverse osmosis layer clean, which is conducive to maintaining the filtration efficiency and the cleanliness of filtered rainwater.

The utility model is further configured as follows: the flushing mechanism includes a flushing nozzle arranged on the side partition wall of the reverse osmosis layer, a water intake pump for drawing water from the storage canal is provided beside the storage canal, and the water intake pump is connected with A water delivery pipeline, the water delivery pipeline is connected with a three-way valve, and the three-way valve is provided with a flushing water pipe connected to the flushing nozzle.

Through the above-mentioned technical scheme, the pump draws rainwater from the water storage canal and transports it to the three-way valve through the water delivery pipeline. Through the control of the three-way valve, the rainwater enters the flushing water pipe and is sprayed out from the flushing nozzle to clean the reverse filter layer. Rinse, wash away sludge, oil and other pollutants, and keep the filter layer clean.

The utility model is further set as follows: the partition wall on the side of the reverse osmosis layer is provided with a drain hole, and the partition wall is provided with a drain pipe connected with the drain hole, and the drain pipe passes through the partition wall and connected to the drain.

Through the above technical proposal, the sewage for flushing the reverse filter layer flows into the drainage pipe from the drainage hole, directly flows into the drainage channel, and finally enters the municipal pipe network.

The utility model is further configured as follows: the soil layer is provided with an irrigation nozzle for providing moisture to the vegetation, the irrigation nozzle is provided with an irrigation water pipe, and the irrigation water pipe is connected to a three-way valve.

Through the above technical scheme, adjust the water outlet channel of the three-way valve, and the rainwater transported by the pump can also be sprinkled on the vegetation on the soil layer through the irrigation nozzle, replenishing the water required by the vegetation in dry weather, which is conducive to maintaining the health of the vegetation At the same time, it avoids the use of external water sources for watering, simplifies the operation process, improves the utilization rate of rainwater, and helps save natural resources.

The utility model is further configured as: the reverse osmosis layer is filled with sand and gravel.

Through the above technical scheme, the reverse osmosis layer is filled with sand and gravel, which can have a better filtering effect and is cheap. The sunken green space set next to the urban road has a reasonable length, and the use of sand and gravel can save a lot of cost.

The utility model is further configured as follows: the reverse osmosis layer is provided with a plurality of fixing plates for fixing the position of sand and gravel in the reverse osmosis layer.

Through the above technical solution, the fixing plate firmly fixes the sand and gravel in the reverse osmosis layer, which can prevent the sand and gravel from being washed away by the water flow during the flushing process.

The utility model is further configured as follows: the support layer is provided with a water hole for water to flow through.

Through the above technical scheme, the support plate plays the role of supporting the soil layer and the sand and gravel layer. Generally, it is made of concrete, and the water permeability is average. By opening the water hole, the rainwater filtered through the soil layer and the sand and gravel layer can smoothly flow into the water storage. in the canal.

The utility model is further configured as follows: an overflow well is provided on the sunken green space, one end of the overflow well passes downwards through the drainage channel connected to the sunken green space, and the other end of the overflow well Up through the sunken green.

Through the above technical scheme, when the urban rainfall is large and exceeds the load of the sunken green space, the excess rainwater will enter the overflow well and be directly discharged into the drainage channel, which can avoid excessive water accumulation in the sunken green space, thereby helping to avoid urban pollution. The occurrence of waterlogging.

The utility model is further configured as: a protective cover is provided at one end of the overflow well passing through the sunken green space, and the protective cover is in the shape of an inverted pot.

Through the above technical proposal, the protective cover is arranged on the opening of the overflow well, which can prevent sundries from entering the overflow well.

In summary, the utility model has the following beneficial effects:

1. By accumulating rainwater in the storage channel, pumping the rainwater, and washing the reverse osmosis layer by the flushing nozzle, the reverse osmosis layer can be cleaned without digging the surface of the green space;

2. Through the irrigation nozzle, the accumulated rainwater can be used to irrigate the vegetation planted on the soil layer;

3. Drain excess rainwater through the overflow well to avoid excessive water accumulation in the sunken green space.

Description of drawings

Fig. 1 is the overall structural representation of the present embodiment;

Fig. 2 is a schematic structural view for embodying the side of the embodiment;

Fig. 3 is the sectional view of A-A place among Fig. 2;

Fig. 4 is a cross-sectional view at B-B in Fig. 2 .

Reference signs: 1, sunken green space; 11, soil layer; 12, reverse osmosis layer; 121, drainage hole; 122, drainage pipe; 123, fixed plate; 13, support layer; 131, water hole; 2, Partition wall; 3. Water storage channel; 4. Drainage channel; 5. Flushing mechanism; 51. Flushing nozzle; 52. Water intake pump; 53. Water delivery pipeline; 54. Three-way valve; 55. Flushing water pipe; 6. Irrigation nozzle ; 61, watering water pipe; 7, overflow well; 71, protective cover.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described in further detail.

Embodiment: An automatic flushing device for the reverse osmosis layer of a sunken green space in a sponge city, referring to Fig. 1, including a sunken green space 1, the water level of the sunken green space 1 is lower than the road level, generally about 20cm lower than the road surface drop. The sunken green space 1 includes a soil layer 11, a reverse osmosis layer 12 and a support layer 13 arranged in sequence from top to bottom. Water-retaining vegetation is planted on the soil layer 11, the reverse osmosis layer 12 is filled with sand and gravel, and the support layer 13 is provided with a water supply layer. The water hole 131 through which the flow passes. The side of the sunken green land 1 is provided with an inclined partition wall 2 , and the sunken green land 1 is separated from the surrounding soil layer through the partition wall 2 . A water storage channel 3 is provided at the bottom of the sunken green space 1 , and the water filtered by the sunken green space 1 flows along the partition wall 2 and enters the water storage channel 3 . A drainage channel 4 is arranged at the bottom of the storage channel 3. When the water volume in the storage channel 3 exceeds its holding capacity, excess water overflows from the storage channel 3, enters the drainage channel 4, and finally flows into the municipal pipe network. The reverse osmosis layer 12 is provided with a flushing mechanism 5 for flushing the reverse osmosis layer 12 , and the sandstone in the reverse osmosis layer 12 is flushed by the flushing mechanism 5 .

Referring to Fig. 3, the flushing mechanism 5 includes a flushing nozzle 51 arranged on the partition wall 2 at the side of the reverse osmosis layer 12, and a water intake pump 52 is arranged in the water storage channel 3, and the water intake pump 52 is connected with a water delivery pipeline 53, and the water delivery pipeline 53 A three-way valve 54 is connected to the top, and a flushing water pipe 55 connected to the flushing nozzle 51 is arranged on the three-way valve 54 . The water intake pump 52 extracts the water in the water storage channel 3 , delivers it to the flushing water pipe 55 through the water delivery pipeline 53 and the three-way valve 54 , and finally sprays it out through the flushing nozzle 51 to flush the gravel in the reverse osmosis layer 12 .

With reference to Fig. 4, in the reverse osmosis layer 12, be provided with some fixing plates 123 for fixing the position of sand and gravel in the reverse osmosis layer 12, the partition wall 2 on the side of the reverse osmosis layer 12 is provided with drainage holes 121, and the partition wall 2 is provided with There is a drain pipe 122 communicating with the drain hole 121 , and the drain pipe 122 passes through the side of the sunken green space 1 and communicates with the drain 4 . The waste water that has washed the gravel is discharged into the drain pipe 122 through the drain hole 121 , and finally flows into the drain 4 .

Referring to FIG. 3 , the soil layer 11 is provided with an irrigation nozzle 6 for providing moisture to the vegetation. The irrigation nozzle 6 is provided with an irrigation water pipe 61 , and the irrigation water pipe 61 is connected to the three-way valve 54 . By adjusting the water outlet direction of the three-way valve 54 , the vegetation on the soil layer 11 can be irrigated with the water in the storage channel 3 .

Referring to Fig. 4, an overflow well 7 is also provided on the sunken green space 1, one end of the overflow well 7 passes downwards through the drain 4 connected to the sunken green space 1, and the other end of the overflow well 7 passes upwards Sunken Greenbelt 1. One end of the overflow well 7 passing through the sunken green space 1 is provided with a protective cover 71, which is in the shape of an inverted pot. When the rainfall is large and the water permeability of the sunken green space 1 is saturated, excessive rainwater passes through the sunken green space 1 through the overflow well 7, directly flows into the drain 4, and is finally discharged into the municipal pipe network.

The specific implementation process: when the city has precipitation, the rainwater passes through the soil layer 11, is filtered through the reverse osmosis layer 12, and is treated as relatively clean water, and then enters the water storage channel 3. Run through the water pump 52 to pump the water out and adjust it on the three-way valve 54. When the vegetation needs to be watered, adjust the water outlet from the irrigation nozzle 6; .

This specific embodiment is only an explanation of the utility model, and it is not a limitation of the utility model. After reading this description, those skilled in the art can make modifications to the embodiment without creative contribution according to needs, but as long as it is within the utility model All new claims are protected by patent law.

Claims (9)

1. An automatic flushing device for the reverse osmosis layer of the sunken green space in a sponge city, comprising a sunken green space (1), the water level of the sunken green space (1) is lower than the road level, and it is characterized in that: the lower The sunken green space (1) includes a soil layer (11), a reverse osmosis layer (12) and a support layer (13) arranged in sequence from top to bottom, and the side of the sunken green space (1) is provided with an inclined partition wall (2), the bottom of the sunken green space (1) is provided with a water storage channel (3), and the bottom edge of the water storage channel (3) is provided with a drainage channel (4), and also includes a water storage channel (4) for the reverse osmosis layer ( 12) Flushing mechanism (5) for flushing. 2. The automatic flushing device for the sunken green land reverse osmosis layer in the sponge city according to claim 1, characterized in that: the flushing mechanism (5) includes a partition wall (2) arranged on the side of the reverse osmosis layer (12) ), the flushing nozzle (51) on the water storage channel (3) is provided with a water intake pump (52) for pumping water from the water storage channel (3), and the water intake pump (52) is connected with a water delivery pipeline ( 53), the water delivery pipeline (53) is connected with a three-way valve (54), and the three-way valve (54) is provided with a flushing water pipe (55) connected to the flushing nozzle (51). 3. The automatic flushing device for the sunken green land reverse osmosis layer in a kind of sponge city according to claim 2, characterized in that: the partition wall (2) on the side of the reverse osmosis layer (12) is provided with drainage holes ( 121), the partition wall (2) is provided with a drain pipe (122) communicated with the drain hole (121), and the drain pipe (122) passes through the partition wall (2) and communicates with the drainage channel (4) up. 4. The automatic flushing device for the sunken green space reverse osmosis layer in a sponge city according to claim 2, characterized in that: the soil layer (11) is provided with an irrigation nozzle (6) for providing moisture to the vegetation , the watering nozzle (6) is provided with a watering water pipe (61), and the watering water pipe (61) is connected to the three-way valve (54). 5. The automatic flushing device for the sunken green space reverse osmosis layer in the sponge city according to claim 1, characterized in that: the reverse osmosis layer (12) is filled with sand. 6. The automatic flushing device for the sunken green land reverse osmosis layer in a sponge city according to claim 5, characterized in that: the reverse osmosis layer (12) is provided with several The fixing plate (123) that fixes the gravel position in the middle. 7. The automatic flushing device for the sunken green land reverse osmosis layer in the sponge city according to claim 1, characterized in that: the support layer (13) is provided with a water hole (131) for water to flow through. 8. The automatic flushing device for the sunken green space reverse osmosis layer in a sponge city according to claim 1, characterized in that: the sunken green space (1) is also provided with an overflow well (7), the One end of the overflow well (7) passes down through the drain (4) connected to the sunken green space (1), and the other end of the overflow well (7) passes upward through the sunken green space (1) . 9. The automatic flushing device for the sunken green space reverse osmosis layer in the sponge city according to claim 8, characterized in that: one end of the overflow well (7) passing through the sunken green space (1) is provided with A protective cover (71), the protective cover (71) is in the shape of an inverted pot.