CN207512863U - Rainwater penetration system - Google Patents

Abstract

The utility model discloses a rainwater infiltration system, which comprises a ground permeable layer, a permeable water pipe structure arranged under the ground permeable layer, a grit chamber connected with the permeable water pipe structure, and a water storage tank connected with the grit chamber; The structure of the first-level grit chamber body connected in series, and the bottom of the grit chamber body is a bucket-shaped structure, which is convenient for sediment accumulation. The utility model adopts the above structure to achieve the purpose of quickly reducing road area water, is not easy to cause rainwater deposition, and improves drainage capacity.

Description

rainwater infiltration system

technical field

The utility model relates to the technical field of rainwater infiltration systems, in particular to the rainwater infiltration system.

Background technique

In the process of urban development, whether it is residential development or the construction of public infrastructure such as roads, squares, and underground pipe networks, most of them use reinforced concrete. A large amount of land is hardened, and the ecology is out of balance, which completely changes the original ecology of the surface. In addition, rainwater drainage facilities Insufficient supporting facilities, small capacity, unreasonable layout, and insufficient innovative means have led to prominent urban waterlogging, endangering the safety of people's lives and property, and damaging the image of urban development. Once it rains for a long time, if the sewers cannot drain the rainwater in time and smoothly, serious urban waterlogging will occur.

In order to alleviate the problem of urban water environment, the construction of sponge city is an ideal choice. 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 use it to make the migration of water in the city more "natural". The construction of sponge city requires further improvement and optimization of the existing rainwater infiltration system.

Utility model content

The purpose of the utility model is to provide a rainwater infiltration system, which solves the problem of insufficient matching of existing urban rainwater drainage facilities.

In order to achieve the above object, the utility model adopts the following technical solutions:

The rainwater infiltration system includes the ground permeable layer, the permeable water pipe structure under the ground permeable layer, the grit chamber connected to the permeable water pipe structure, and the storage tank connected to the grit chamber; the grit chamber is a multi-stage grit chamber body The series structure, the bottom of the grit chamber body is a bucket structure, which is convenient for sediment accumulation.

Further, the grit chamber also includes a sludge pump and a sludge discharge channel connected to the sludge pump, and the sludge pump is arranged at the bottom of the grit chamber body; the infiltration water pipe structure is connected to the water inlet of the grit chamber, and the grit chamber The water outlet of the pool is connected to the water storage tank.

Further, the water inlet of the grit chamber is higher than the water outlet of the grit chamber.

Further, the ground permeable layer is a permeable brick layer and/or a vegetation layer.

Further, the permeable water pipe structure includes a water pipe body with water seepage holes on the pipe wall, a water-permeable isolation layer arranged on the outer wall of the water pipe body, a sandstone permeable layer arranged on the outer layer of the water-permeable isolation layer, and a sandstone permeable layer arranged on the sandstone permeable layer. The first geotextile infiltration layer on the outer layer and the sand and soil infiltration layer arranged on the outer layer of the first geotextile infiltration layer.

Further, the reservoir is provided with an overflow port and a drain pipe, and the rainwater is discharged into a predetermined drainage area through the overflow port and the drain pipe after being fully stored.

Further, it also includes a return pipe and a water pump connected to the storage tank, and pumps the water in the storage tank to the ground according to the water demand.

Further, it also includes a permeation well, and the permeation well and the grit chamber are connected through the permeation water pipe structure.

Further, the top of the infiltration well is set on the ground and covered with a drainage rain grate.

Compared with the prior art, the beneficial effects of the utility model are as follows:

The utility model adopts the combined structure of the ground permeable layer, the permeable water delivery pipe structure and the grit chamber. The ground permeable layer is used to expand the surface rainwater collection surface, and the combination of the ground permeable layer infiltration and the infiltration well straight discharge is adopted, and the rainwater penetrates the road surface. Entering the infiltration water pipe structure, through the infiltration water pipe structure drainage and local absorption of underground soil, sand, etc., to achieve the purpose of quickly reducing road surface water, not easy to cause rainwater deposition, and improve drainage capacity. The permeable water pipe structure can not only absorb rainwater through the ground permeable layer, sand permeable layer, geotextile permeable layer, sand permeable layer and permeable isolation layer, but also release permeable rainwater outwards to maximize the absorption of rainwater by the soil Reduce the effect and improve the pressure bearing capacity of the pipeline for rainwater.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some implementations of the present invention. For example, those skilled in the art can also obtain other drawings based on these drawings without paying creative labor.

Fig. 1 is the rainwater infiltration system described in the utility model, the schematic block diagram of the principle of embodiment, the arrow is the water flow direction among the figure;

Fig. 2 is a schematic cross-sectional structure diagram of the permeable water delivery pipe structure along the A-A direction in Fig. 1 .

In the figure, 1-ground infiltration layer; 2-infiltration water pipe structure; 21-water pipe body; 22-permeable isolation layer; 23-sand and gravel infiltration layer; Sand tank; 31-grit chamber body; 311-the bottom of the grit chamber body; 32-sludge pump; 33-drain; 4-reservoir; 5-infiltration well; 51-permeation hole; 52-infiltration Water inlet of the well; 53-water outlet of the infiltration well; 6-drainage rain grate; 7-gravel layer; 8-penetration layer of geotextile; 9-coarse sand cushion.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example.

The rainwater infiltration system shown in the embodiment of Fig. 1 and Fig. 2 includes a ground permeable layer 1, a permeable water pipe structure 2 arranged under the ground permeable layer 1, a grit chamber 3 connected to the permeable water pipe structure 2, and a grit chamber connected 3 of the cistern 4. The ground permeable layer 1 is a permeable brick layer and/or a vegetation layer. The permeable water pipe structure 2 includes a water pipe body 21 with a water seepage hole on the pipe wall, a water-permeable isolation layer 22 arranged on the outer wall of the water pipe body 21, a sand permeable layer 23 arranged on the outer layer of the water-permeable isolation layer 22, and a sandstone layer 23 arranged on the outer wall of the water pipe body. The first geotextile permeable layer 24 on the outer layer of the permeable layer 23 and the sand permeable layer 25 arranged on the outer layer of the first geotextile permeable layer 24 .

The grit chamber 3 is used to intercept and settle the sediment and solid matter in the rainwater runoff. The size of the grit chamber is determined by comprehensively considering factors such as regional land area, topography, annual average rainfall, rainfall frequency, and sand settling time requirements. The grit chamber 3 is a structure in which multi-stage grit chamber bodies 31 are connected in series, and the bottom 311 of the grit chamber body is a bucket-shaped structure, which is convenient for sediment accumulation. The grit chamber 3 also includes a sludge pump 32 and a sludge discharge channel 33 connected to the sludge pump. The sludge pump 32 is located at the bottom 311 of the grit chamber body, and is periodically dredged according to the sediment deposition conditions. The infiltration water delivery pipe structure 2 is connected to the water inlet of the grit chamber 3, the water outlet of the grit chamber 3 is connected to the reservoir 4, and the water inlet of the grit chamber 3 is higher than the water outlet of the grit chamber.

Reservoir 4 is used to store rainwater after sedimentation. Reservoir 4 is provided with overflow outlet (not shown) and drainpipe, and after storing full, rainwater is discharged into river course, park, idle area from overflow outlet and drainpipe Wait for the scheduled drainage area. This embodiment also includes a water return pipe (not shown) and a water pump (not shown) connected to the reservoir 4 to pump the water in the reservoir to the ground according to the water demand for urban garden irrigation and the like.

As a further improvement to this embodiment, this embodiment also includes a permeation well 5 , and the permeation well 5 and the grit chamber 3 are connected through the permeation water delivery pipe structure 2 . The top of the infiltration well 5 is located on the ground and covered with drainage rain grate 6. The lower part of the well wall of the permeation well 5 is provided with a permeation hole 51 , and the water inlet 52 of the permeation well is located above the water outlet 53 of the permeation well 5 . The outer wall of the permeation well 5 is provided with a gravel layer 7 (the gravel layer can adopt stones for paving asphalt roads, or cobblestones), a second geotextile permeable layer 8 and a coarse sand cushion 9 from the inside to the outside. This implementation uses infiltration wells, which not only realize the replenishment of groundwater, but also realize the retention of surface rainwater, slow down the flow rate of rainwater, facilitate the infiltration of rainwater, and reduce the surface flow of rainwater and the pressure of the municipal rainwater pipe network. The effect of storage and stagnation is conducive to rainwater becoming an important resource for urban sustainable development and improving the ecological environment.

For other structures of this embodiment, refer to the prior art.

The utility model is not limited to the above-mentioned embodiment, if the various changes or modifications of the utility model do not depart from the spirit and scope of the utility model, if these changes and modifications belong to the claims of the utility model and within the equivalent technical scope, Then the utility model is also intended to include these modifications and variations.

Claims (9)

1. rainwater infiltration system, it is characterized in that: comprise ground seepage layer, be located at the seepage water delivery pipe structure under the ground seepage layer, connect the grit chamber of the seepage water pipe structure and the reservoir that connects the grit chamber; The grit chamber is The structure of the multi-stage grit chamber body connected in series, and the bottom of the grit chamber body is a bucket-shaped structure, which is convenient for sediment accumulation. 2. The rainwater infiltration system according to claim 1, characterized in that: the grit chamber also includes a sludge pump and a sludge discharge channel connected to the sludge pump, and the sludge pump is located at the bottom of the grit chamber body; The infiltration water pipe structure is connected to the water inlet of the grit chamber, and the water outlet of the grit chamber is connected to the water storage tank. 3. The rainwater infiltration system according to claim 2, characterized in that: the water inlet of the grit chamber is higher than the water outlet of the grit chamber. 4. The rainwater infiltration system according to claim 1, wherein the ground infiltration layer is a permeable brick layer and/or a vegetation layer. 5. The rainwater infiltration system according to claim 1, characterized in that: the structure of the infiltration water delivery pipe comprises a water pipe body with a water seepage hole on the pipe wall, a water-permeable isolation layer arranged on the outer wall of the water pipe body, and a water-permeable isolation layer arranged outside the water-permeable isolation layer. The sand and gravel permeable layer on the upper layer, the first geotextile permeable layer arranged on the outer layer of the sand and gravel permeable layer, and the sand and soil permeable layer arranged on the outer layer of the first geotextile permeable layer. 6. The rainwater infiltration system according to any one of claims 1 to 5, characterized in that: the reservoir is provided with an overflow port and a drainpipe, and the rainwater is discharged from the overflow port and the drainpipe into a predetermined drainage after it is full. area. 7 . The rainwater infiltration system according to claim 6 , further comprising a return pipe and a water pump connected to the storage tank, and pumping the water in the storage tank to the ground according to the water demand. 8. The rainwater infiltration system according to any one of claims 1 to 5, characterized in that it further comprises an infiltration well, and the infiltration well and the grit chamber are connected through the infiltration water pipe structure. 9. The rainwater infiltration system according to claim 6, characterized in that: the top of the infiltration well is set on the ground and covered with drainage rain grates.