CN204898828U - Rainwater conserves - restores integrative device - Google Patents

Abstract

The utility model relates to a rainwater conservation-restoration integrated device. By setting a repair well and an infiltration drainage ditch, the repair well includes an outer well and an inner well located in the middle of the outer well. A first repair layer is set between the side walls of the outer well, a second repair layer is laid on the periphery of the repair well, and a third repair layer is laid on the periphery of the seepage drainage ditch; thus the integrated rainwater conservation and repair described in the utility model The device, while realizing the storage and infiltration of rainwater, can also realize the good restoration of rainwater, effectively reduce the content of heavy metals and other harmful components infiltrated into the underground rainwater, and can realize the preliminary rainwater recovery through preliminary interception and re-filtering of rainwater. Filtration and purification can not only avoid the clogging of permeable pores and pipes, but also help the repair materials in the repair layer to fully exert their repair effect and prolong the service life of the repair materials.

Description

A rainwater conservation-restoration integrated device

technical field

The utility model relates to a rainwater conservation-restoration integrated device, which belongs to the technical field of rainwater resource utilization.

Background technique

In cities, rainwater falling on the ground or roofs is directly discharged to the municipal drainage pipe network through the rainwater grates on the ground or the gutters on the ground, which increases the runoff of rainwater in the city and increases the drainage pressure of the municipal pipe network. Especially in today's large-scale demolition and reconstruction of cities and the construction climax of a large number of new residential areas, many new residential areas need to lay deep-buried rainwater pipes and connect them with the existing municipal drainage network, which increases the existing municipal drainage network. load. On the other hand, because most of the rainwater fails to return to the ground, the groundwater level in the city has been greatly reduced year by year. The reduction of groundwater sources has made the city a dry island and deteriorated the ecological environment of the city.

At present, some solutions to this problem are to build rainwater collection ponds and rainwater collection pipe networks in the building area, and the collected rainwater will be used as landscaping water in the community to recharge to the ground after sedimentation and filtration. However, in order to achieve the effect of smooth drainage and seepage To prevent pipe network blockage, more rainwater inspection wells need to be installed on the ground, and the wells are connected with shorter pipes. However, too many rainwater inspection wells will not only increase the cost of the infrastructure of the community, but also affect the ground quality. The landscape effect, and direct connection with pipes will cause a large rainfall load in the pool, and it will not be able to achieve a good infiltration effect. What's more, when there is a sudden heavy rain, due to the poor drainage in a short period of time, a large amount of rainwater and road debris will pour into the rainwater outlet, which will easily cause the rainwater outlet to be blocked and the local low-lying land to be too deep. Cause regional traffic paralysis, and even regional rain and flood disasters. Moreover, with the deterioration of the atmospheric environment and soil environment, heavy metals and other harmful components infiltrated into the underground rainwater are seriously exceeding the standard, which is not suitable for direct recycling. To sum up, the existing methods generally only use the means of complete discharge or complete recovery of rainwater or partial infiltration and utilization. There is no mature rainwater conservation-restoration integrated system, and this problem needs to be solved urgently.

Utility model content

The purpose of this utility model is to provide a rainwater conservation-restoration integrated device to solve the existing technical problems of rainwater infiltration, unreasonable discharge system structure, poor infiltration effect and inability to repair rainwater.

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

A rainwater conservation-restoration integrated device, which includes a repair well (1) and an infiltration drain (2);

The repair well (1) is distributed on the ground, and the repair well (1) includes an outer well (11) and an inner well (12) located in the middle of the outer well (11), and the inner well (12) The wellhead is located below the wellhead of the outer well (11), the lower end of the inner well (12) is fixed on the inner bottom of the outer well (11), and the wellhead of the inner well (12) and the outer well Retention filter unit (14) and diversion unit (15) are arranged between the wellheads of (11), and described diversion unit (15) is positioned at the below of described retention filter unit (14);

The side wall and the bottom surface of the outer well (11) are all distributed with first permeable holes (16), and the wellhead of the outer well (11) is covered with a permeable well cover (17); the side of the inner well (12) A number of through holes are distributed on the wall, and a screen layer (13) is arranged close to the inner side wall of the inner well (12);

A first repair layer (19) is arranged between the side wall of the inner well (12) and the side wall of the outer well (11), and a second repair layer (18) is laid on the periphery of the repair well (1);

The seepage drainage ditch (2) is connected to each of the repair wells (1) in a network, and a horizontal connecting pipe (3) is arranged between the seepage drainage ditch (2) and the repair well (1). The side wall of the permeable drainage ditch (2) is distributed with second permeable holes (21), and the periphery of the permeable drainage ditch (2) is laid with a third repair layer (23), and the top cover of the permeable drainage ditch (2) Drain grate cover (22) is arranged.

The filter screen layer (13) includes one or more layers of filter screens, and the mesh aperture of the filter screens is 1-5mm.

The retaining filter unit (14) is a funnel-shaped filter screen, and the mesh aperture of the funnel-shaped filter screen is 2-8 mm.

The diversion unit (15) is an inverted cone diversion cylinder, and the included angle between the side wall of the diversion cylinder and the horizontal direction is 30-60°.

The opening diameters of the first water permeable hole (16) and the second water permeable hole (21) are both 8-10mm, and the opening ratio is 1.5-3%.

A layer of permeable geotextile is laid on the periphery of the second repairing layer (18) and the third repairing layer (23).

A layer of permeable geotextile is laid between the periphery of the repair well (1) and the second repair layer (18), and between the periphery of the permeable drainage ditch (2) and the third repair layer (23).

The laying slope of the seepage drainage ditches (2) between the adjacent repair wells (1) is 0.01-0.02, and the laying slopes of the repair wells (1) are distributed sequentially from high to low;

The repair well (1) at the lowest laying slope is connected with a rainwater collection tank by a drainage pipe.

The cross section of the seepage drainage ditch (2) is a U-shaped structure.

Both the repair well (1) and the seepage drainage ditch (2) are made of resin concrete; the transverse connecting pipe (3) is a plastic pipe made of HDPE.

Compared with the prior art, the utility model has the following characteristics and beneficial effects:

The rainwater conservation-restoration integrated device described in the utility model is provided with a repair well and an infiltration drainage ditch, and the repair well includes an outer well and an inner well located in the middle of the outer well, on the side wall of the inner well and The first repair layer is set between the side walls of the outer well, the second repair layer is laid on the periphery of the repair well, and the third repair layer is laid on the periphery of the seepage drainage ditch; when the rainwater falling to the ground is discharged into the repair well , the rainwater that has been preliminarily intercepted and filtered flows into the inner well under the action of the diversion unit, and the rainwater in the inner well is filtered again by the filter layer and then enters the first repair layer from the side wall of the inner well for repairing treatment. Afterwards, part of the purified rainwater passes through the first permeable holes on the side wall and the bottom of the outer well and enters the second repair layer for deep repair. The purified rainwater that is too late to infiltrate flows into the infiltration drainage ditch through the horizontal connection pipe for storage and infiltration, and enters the second repair layer. The three repair layers are deeply repaired, so that the rainwater conservation-repair integrated device described in the utility model can realize the good repair of rainwater while realizing the storage and infiltration of rainwater, and effectively reduce the heavy metals and other harmful elements that seep into the underground rainwater. Preliminary filtration and purification of rainwater can be achieved through preliminary interception and re-filtering of rainwater, which can not only avoid the clogging of permeable pores and pipes, but also help the repair materials in the repair layer to fully exert their repair effect and prolong the use of repair materials cycle.

Description of drawings

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

Fig. 1 is the structural representation of the longitudinal section of the rainwater conservation-restoration integrated device described in embodiment 2;

Fig. 2 is the structural representation of the cross-section of the rainwater conservation-restoration integrated device described in embodiment 2;

Fig. 3 is a structural schematic diagram of the cross-section of the permeable drainage ditch described in Example 2.

Reference signs: 1-repair well, 11-outer well, 12-inner well, 13-screen layer, 14-filter unit, 15-flow diversion unit, 16-first permeable hole, 17-permeable manhole cover, 18- Second repair layer, 19-first repair layer, 2-infiltration drainage ditch, 21-second permeable hole, 22-drainage grate cover, 23-third repair layer, 24-permeable geotextile, 25-bottom bracket, 3-Transverse connecting pipe.

Detailed ways

Example 1

This embodiment provides a rainwater conservation-restoration integrated device, including a repair well 1 and a seepage drainage ditch 2 .

The repair wells 1 are distributed on the ground, and the repair wells 1 are made of resin concrete. The repair well 1 includes an outer well 11 and an inner well 12 located in the middle of the outer well 11, the wellhead of the inner well 12 is located below the wellhead of the outer well 11, and the lower end of the inner well 12 is fixed to the The inner bottom of the outer well 11 is provided with an interception filter unit 14 and a diversion unit 15 between the wellhead of the inner well 12 and the wellhead of the outer well 11, and the diversion unit 15 is located at the interception filter unit 14 below.

First permeable holes 16 are distributed on the side wall and bottom surface of the outer well 11 , and the wellhead of the outer well 11 is covered with a permeable well cover 17 . In this embodiment, the opening diameters of the first permeable holes 16 are all 8-10 mm, and the opening ratio is 1.5-3%.

A number of through holes are distributed on the side wall of the inner well 12, and a filter screen layer 13 is arranged close to the inner side wall of the inner well 12. In this embodiment, the filter screen layer 13 includes a layer of filter screen, and the filter screen The mesh aperture is 1mm. A first repair layer 19 is set between the side wall of the inner well 12 and the side wall of the outer well 11 , and a second repair layer 18 is laid on the periphery of the repair well 1 .

The seepage drainage ditch 2 is connected to each of the repair wells 1 in a network, and a horizontal connecting pipe 3 is provided between the seepage drainage ditch 2 and the repair well 1, and the side walls of the seepage drainage ditch 2 are distributed with The second permeable hole 21, the top of the permeable drainage ditch 2 is covered with a drainage grate cover 22, and a third repair layer 23 is laid on the periphery of the permeable drainage ditch 2, and a permeable layer 23 is laid on the periphery of the third repair layer 23. Geotextiles 24.

As an optional implementation mode, in this embodiment, the retention filter unit 14 is a funnel-shaped filter screen, and the mesh aperture of the funnel-shaped filter screen is 2mm; the flow guide unit 15 is an inverted cone-shaped flow guide cylinder , the angle α between the side wall of the guide tube and the horizontal direction is 30-60° (see Figure 1).

In this embodiment, the horizontal connecting pipe 3 is a plastic pipe made of HDPE; the drain grate cover 22 is hollowed out, and the length of each drain grate cover 22 is 600mm.

The first repair layer 19, the second repair layer 18, and the third repair layer 23 are all filled with water purification repair materials. As an optional embodiment, the water purification repair materials can be activated carbon, negative potential beads, zeolite , feldspar, medical stone, wood fish stone, pottery clay, loess, antibacterial ceramics, black beryl, tourmaline powder or a mixture of several, but not limited to the above materials

In this embodiment, the laying slope of the seepage drainage ditch 2 between the adjacent repair wells 1 is 0.01, and the laying slopes of the repair wells 1 are distributed in order from high to low; the repair well 1 at the lowest laying slope It is connected to the rainwater collection tank by the drainage pipe.

Example 2

This embodiment provides a rainwater conservation-restoration integrated device, as shown in FIG. 1 and FIG. 2 , including a repair well 1 and a seepage drainage ditch 2 .

The repair wells 1 are distributed on the ground, and the repair wells 1 are made of resin concrete. The repair well 1 includes an outer well 11 and an inner well 12 located in the middle of the outer well 11, the wellhead of the inner well 12 is located below the wellhead of the outer well 11, and the lower end of the inner well 12 is fixed to the The inner bottom of the outer well 11 is provided with an interception filter unit 14 and a diversion unit 15 between the wellhead of the inner well 12 and the wellhead of the outer well 11, and the diversion unit 15 is located at the interception filter unit 14 below.

In this embodiment, the retention filter unit 14 is a funnel-shaped filter screen, and the mesh aperture of the funnel-shaped filter screen is 2-8mm; the flow guide unit 15 is an inverted cone-shaped flow guide cylinder, and the flow guide The included angle α between the cylinder side wall and the horizontal direction is 30-60° (see Figure 1). As a preferred implementation mode, in this embodiment, the funnel-shaped filter net is also wrapped with a non-woven geotextile.

First permeable holes 16 are distributed on the side wall and bottom surface of the outer well 11 , and the wellhead of the outer well 11 is covered with a permeable well cover 17 . In this embodiment, the opening diameters of the first permeable holes 16 are all 8-10 mm, and the opening ratio is 1.5-3%.

A number of through holes are distributed on the side wall of the inner well 12, and a filter screen layer 13 is arranged close to the inner side wall of the inner well 12. In this embodiment, the filter screen layer 13 includes a multi-layer filter screen, and the filter screen The mesh aperture is 1-5mm. A first repair layer 19 is set between the side wall of the inner well 12 and the side wall of the outer well 11, and a second repair layer 18 is laid on the periphery of the repair well 1, and a water-permeable layer 18 is laid on the periphery of the second repair layer 18. A geotextile, a permeable geotextile is also laid between the periphery of the repair well 1 and the second repair layer 18 .

The seepage drainage ditch 2 is connected to each of the repair wells 1 in a network, and a horizontal connecting pipe 3 is provided between the seepage drainage ditch 2 and the repair well 1, and the side walls of the seepage drainage ditch 2 are distributed with The second permeable hole 21, the top of the permeable drainage ditch 2 is covered with a drainage grate cover 22, and a third repair layer 23 is laid on the periphery of the permeable drainage ditch 2, and a permeable layer 23 is laid on the periphery of the third repair layer 23. A geotextile 24 , a permeable geotextile 24 is laid between the periphery of the permeable drainage ditch 2 and the third repair layer 23 (see FIG. 3 ).

In this embodiment, the horizontal connecting pipe 3 is a plastic pipe made of HDPE; the opening diameter of the second permeable hole 21 is 8-10mm, and the opening ratio is 1.5-3%. The second permeable hole 21 can also be designed in the shape of letters, characters or various patterns according to the needs of the surrounding environment in addition to the conventional strip shape and circle shape. The drain grate cover 22 is grid-shaped, and the length of each drain grate cover 22 is 600-1000mm. As a preferred embodiment, reinforcement plates are provided at the joints of the transverse connecting pipe 3 , the side wall of the repair well 1 and the seepage drainage ditch 2 .

As shown in Figure 3, the cross-section of the permeable drainage ditch 2 is a U-shaped structure, the permeable drainage ditch 2 is made of resin concrete, and the width of the permeable drainage ditch 2 is 100-600mm. The length can be more than 1 meter. The top edge of the infiltration drainage ditch 2 is L-shaped, and the two edges are symmetrical shapes so that the embedded drainage ditch grate cover 22 is flush with the ground, and the bottom corner of the infiltration drainage ditch 2 has a bottom bracket 25 for strengthening.

The first repair layer 19, the second repair layer 18, and the third repair layer 23 are all filled with water purification repair materials. As an optional embodiment, the water purification repair materials can be activated carbon, negative potential beads, zeolite , feldspar, medical stone, wood fish stone, pottery clay, loess, antibacterial ceramics, black beryl, tourmaline powder or a mixture of several, but not limited to the above materials

In this embodiment, the laying slope of the seepage drainage ditch 2 between the adjacent repair wells 1 is 0.02, and the laying slopes of the repair wells 1 are distributed in order from high to low; the repair well 1 at the lowest laying slope It is connected to the rainwater collection tank by the drainage pipe.

The working process of the utility model is as follows: the rainwater first falls on the ground and the roof, and then enters the repair well 1 after converging. In the repair well 1, it is intercepted and filtered by the retention filter unit 14, and the rainwater is filtered in the diversion unit 15 after filtering. Under the action, it enters the inner well 12, and the rainwater in the inner well 12 is filtered again by the filter layer 13, and then enters the first repair layer 19 from the side wall of the inner well 12 for repair treatment, and then part of the purified rainwater passes through the The first permeable hole 16 on the side wall and bottom of the outer well 11 enters the second repair layer 18 for deep repair, and the purified rainwater that is too late to infiltrate flows into the infiltration drain 2 through the horizontal connecting pipe 3 for storage and infiltration, and enters the third repair The rainwater conservation and restoration integrated device described in this utility model can realize the good restoration of rainwater while realizing the storage and infiltration of rainwater, and effectively reduce the heavy metals and other harmful components seeping into the underground rainwater The initial filtration and purification of rainwater can be achieved through preliminary interception and re-filtering of rainwater, which can not only avoid the blockage of water-permeable channels and pipes, but also help the repair materials in the repair layer to fully exert their repair effect and prolong the service life of repair materials.

Apparently, the above-mentioned embodiments are only examples for clear description, rather than limiting the implementation. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. And the obvious changes or changes derived therefrom are still within the protection scope of the present utility model.

Claims (10)

1. A rainwater conservation-repair integrated device is characterized in that it comprises a repair well (1) and an infiltration drain (2); The repair well (1) is distributed on the ground, and the repair well (1) includes an outer well (11) and an inner well (12) located in the middle of the outer well (11), and the inner well (12) The wellhead is located below the wellhead of the outer well (11), the lower end of the inner well (12) is fixed on the inner bottom of the outer well (11), and the wellhead of the inner well (12) and the outer well Retention filter unit (14) and diversion unit (15) are arranged between the wellheads of (11), and described diversion unit (15) is positioned at the below of described retention filter unit (14); The side wall and the bottom surface of the outer well (11) are all distributed with first permeable holes (16), and the wellhead of the outer well (11) is covered with a permeable well cover (17); the side of the inner well (12) A number of through holes are distributed on the wall, and a screen layer (13) is arranged close to the inner side wall of the inner well (12); A first repair layer (19) is arranged between the side wall of the inner well (12) and the side wall of the outer well (11), and a second repair layer (18) is laid on the periphery of the repair well (1); The seepage drainage ditch (2) is connected to each of the repair wells (1) in a network, and a horizontal connecting pipe (3) is arranged between the seepage drainage ditch (2) and the repair well (1). The side wall of the permeable drainage ditch (2) is distributed with second permeable holes (21), and the periphery of the permeable drainage ditch (2) is laid with a third repair layer (23), and the top cover of the permeable drainage ditch (2) Drain grate cover (22) is arranged. 2. The rainwater conservation-restoration integrated device according to claim 1, characterized in that, the filter screen layer (13) comprises one or more layers of filter screens, and the mesh aperture of the filter screens is 1-5mm. 3. The rainwater conservation-restoration integrated device according to claim 1 or 2, characterized in that, the retention filter unit (14) is a funnel-shaped filter, and the mesh aperture of the funnel-shaped filter is 2-8mm . 4. The rainwater conservation-restoration integrated device according to claim 3, characterized in that, the guide unit (15) is an inverted conical guide tube, and the included angle between the side wall of the guide tube and the horizontal direction is 30-60°. 5. The rainwater conservation-restoration integrated device according to claim 1, 2 or 4, characterized in that the opening diameters of the first permeable hole (16) and the second permeable hole (21) are both 8-10mm , Opening rate 1.5-3%. 6. The rainwater conservation-restoration integrated device according to claim 5, characterized in that a layer of permeable geotextile is laid on the periphery of the second repair layer (18) and the third repair layer (23). 7. The rainwater conservation-restoration integrated device according to claim 6, characterized in that, between the periphery of the repair well (1) and the second repair layer (18), the periphery of the seepage drainage ditch (2) A layer of permeable geotextile is laid between the third repair layer (23). 8. The rainwater conservation-restoration integrated device according to claim 7, characterized in that, the laying slope of the seepage drainage ditch (2) between the adjacent repair wells (1) is 0.01-0.02, and the repair well ( 1) The laying slope is distributed sequentially from high to low; The repair well (1) at the lowest laying slope is connected with a rainwater collection tank by a drainage pipe. 9. The rainwater conservation-restoration integrated device according to claim 1 or 2 or 4 or 6 or 7 or 8, characterized in that the cross-section of the seepage drainage ditch (2) is a U-shaped structure. 10. The rainwater conservation-restoration integrated device according to claim 9, characterized in that, the repair well (1) and the seepage drainage ditch (2) are made of resin concrete; the horizontal connecting pipe (3) is made of HDPE Material plastic tube.