Dry stream construction system with rainwater collecting and recycling functions

Abstract

The utility model discloses a dry stream construction system capable of collecting and recycling rainwater, which comprises a water quality purification system and a water storage structure, and the water quality purification system is connected with the water storage structure through a pipeline; the pipeline comprises a drainage blind pipe and a water inlet pipe connected with the drainage blind pipe, the water storage structure comprises a reservoir and a pump station, the reservoir is connected with the water inlet pipe, a water pump and a water purification system are arranged in the pump station, the pipeline connected with a water inlet of the water pump extends into the reservoir, and the pipeline connected with a water outlet of the water pump is connected with the water purification system. When it rains, the water quality purification system accumulates rainwater, part of the rainwater permeates into underground water through natural purification, part of the rainwater is filtered through the water quality purification system and then is discharged into the pre-buried water storage structure through a pipeline, and part of the rainwater in the water storage structure serves as an irrigation water source of public green land in a local area. And the other part of redundant rainwater is directly discharged into a municipal rainwater pipe network.

Description

Technical Field

[0001] The utility model relates to the technical field of rainwater collection, in particular to a dry creek construction system with rainwater collection and recycling function. Background Art

[0002] Sponge city is a new generation of urban stormwater management concept, which means that the city can adapt to environmental changes and deal with natural disasters caused by rainwater like a sponge, and has good elasticity. It can also be called a "water-elastic city". The city can absorb, store, infiltrate and purify water when it rains, and release and utilize the stored water when needed, so as to realize the free migration of rainwater in the city.

[0003] At present, the rainwater collection structure in sponge cities is relatively complex. Rainwater is filtered through rainwater discard filter devices and rainwater automatic filters before being collected. The cost is high and there is no landscape effect. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a dry creek construction system with rainwater collection and recycling, including a water purification system and a water storage structure, wherein the water purification system is connected to the water storage structure through a pipeline;

[0005] The pipeline includes a drainage blind pipe and a water inlet pipe connected to the drainage blind pipe. The water storage structure includes a water reservoir and a pump station. The water reservoir is connected to the water inlet pipe. A water pump and a water purification system are arranged in the pump station. The pipeline connected to the water inlet of the water pump extends into the water reservoir, and the pipeline connected to the water outlet of the water pump is connected to the water purification system.

[0006] Preferably, the water purification system comprises a dry pond, in which a gravel layer, a first geotextile, a yellow sand layer, a second geotextile, a graded gravel layer and a stream pit stone layer are arranged in sequence from bottom to top for filtering runoff rainwater.

[0007] Preferably, an inwardly concave aquifer is formed above the rock layer of the creek pit.

[0008] Preferably, the drainage blind pipe is located in the gravel layer, and a plurality of openings (slits) are provided on the pipe wall of the drainage blind pipe.

[0009] Preferably, the outer side of the drainage blind pipe is coated with non-woven fabric.

[0010] Preferably, both ends of the drainage blind pipe are sealed.

[0011] Preferably: an overflow outlet is provided at one side end of the upper portion of the water storage tank, and the overflow outlet is connected to the municipal rainwater pipe network.

[0012] Preferably, a maintenance port is provided on the top of the pump station for maintenance of equipment in the pump station.

[0013] Preferably, the drainage blind pipe and the water inlet pipe are connected via a pipe joint.

[0014] Preferably: the water reservoir is also provided with an inspection port, and the inspection port is provided with an inspection door.

[0015] Technical effects and advantages of the utility model:

[0016] The utility model combines the dry creek landscape with the pool landscape, has a relatively simple structure, and has a low cost for rainwater collection. It can make full use of rainwater resources to absorb and utilize rainfall on the spot. During the maintenance period, it can be used as a source of irrigation water for green spaces in the local area. At the same time, it can balance the earthwork on the spot and save the amount of external earthwork. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of a dry creek construction system with rainwater collection and recycling provided in an embodiment of the present application;

[0018] Figure 2 It is a structural schematic diagram of a drainage blind pipe in a dry creek construction system with rainwater collection and recycling provided in an embodiment of the present application;

[0019] Figure 3 It is a schematic diagram of the structure of a water purification system in a dry creek structure system with rainwater collection and recycling provided in an embodiment of the present application;

[0020] Figure 4 It is a structural schematic diagram of the water storage structure in the dry creek construction system with rainwater collection and recycling provided in an embodiment of the present application.

[0021] In the figure: 1. Water purification system; 11. Dry pond; 12. Gravel layer; 13. First geotextile; 14. Yellow sand layer; 15. Second geotextile; 16. Graded gravel layer; 17. Creek stone layer; 18. Aquifer; 2. Water storage structure; 21. Reservoir; 211. Overflow; 22. Pump station; 221. Water pump; 222. Water purification system; 23. Inspection port; 3. Drainage blind pipe; 4. Water inlet pipe; 5. Non-woven fabric. DETAILED DESCRIPTION

[0022] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific purposes.

[0023] See also Figures 1-2 In this embodiment, a dry creek structure system with rainwater collection and recycling is provided, including a water purification system 1 and a water storage structure 2. The water purification system 1 is connected to the water storage structure 2 through a pipeline. When it rains, the water purification system 1 collects rainwater, part of the rainwater is naturally purified and infiltrates into the groundwater, and part of the rainwater is filtered by the water purification system 1 and discharged into the pre-buried water storage structure 2 through a pipeline. Part of the rainwater in the water storage structure 2 is used as an irrigation water source for public green spaces in a local area, and the other part of the excess rainwater is directly discharged into the municipal rainwater pipe network.

[0024] Specifically, the dry creek landscape is combined with the pool landscape to make full use of rainwater resources, so that rainfall can be absorbed and utilized on the spot. During the garden maintenance period, it can be used as a source of irrigation water for green spaces in local areas. At the same time, it can balance the earthwork on the spot and save the amount of external earthwork.

[0025] In this embodiment, the pipeline includes a drainage blind pipe 3 and a water inlet pipe 4 connected to the drainage blind pipe 3. Both ends of the drainage blind pipe 3 are sealed so that soil and gravel cannot enter therein from both ends of the drainage blind pipe 3. The pipe wall of the drainage blind pipe 3 is provided with a plurality of openings with an aperture of 15-20 mm so that rainwater can enter the drainage blind pipe 3. The drainage blind pipe 3 is located in the water purification system 1, and the filtered rainwater enters the water storage structure 2 from the drainage blind pipe 3 through the water inlet pipe 4.

[0026] In one embodiment, the drainage blind pipe 3 and the water inlet pipe 4 may be connected via a pipe joint.

[0027] In another embodiment, a slit is formed in the wall of the drainage blind pipe 3 so that rainwater can enter the drainage blind pipe 3 through the slit.

[0028] Furthermore, the outer side of the drainage blind pipe 3 is covered with a non-woven fabric 5 to prevent large sand and stones from entering the drainage blind pipe 3 .

[0029] See also Figure 3 As shown, the water purification system 1 includes a dry pond 11, which is compacted by plain soil with a compaction degree of ≥90%. A gravel layer 12 is arranged at the bottom of the dry pond 11, and the drainage blind pipe 3 is located in the gravel layer 12. The thickness of the gravel layer 12 is 300-500mm, and the gravel particle size in the gravel layer 12 is 20-30mm.

[0030] A first geotextile 13 is arranged above the gravel layer 12, a yellow sand layer 14 is arranged above the first geotextile 13, and a second geotextile 15 is arranged above the yellow sand layer 14. The weight of the first geotextile 13 and the second geotextile 15 is 200-300g / m 2 The thickness of the yellow sand layer 14 is 30-50 mm.

[0031] A graded crushed stone layer 16 is arranged above the second geotextile 15 . The thickness of the graded crushed stone layer 16 is 100-200 mm, and the particle size of the crushed stones in the graded crushed stone layer 16 is 10-20 mm.

[0032] A stream pit stone layer 17 is arranged above the graded crushed stone layer 16, and the particle size of the stones in the stream pit stone layer 17 is 100-200mm.

[0033] An inwardly concave water storage layer 18 is formed above the stream pit stone layer 17, which has a temporary water storage function. The runoff rainwater flows into the water storage structure 2 after being purified by the water purification system 1.

[0034] See also Figure 4 As shown, the water storage structure 2 includes a water reservoir 21 and a pump station 22. The water reservoir 21 is connected to the water inlet pipe 4. The rainwater filtered by the water purification system 1 can enter the water reservoir 21 from the water inlet pipe 4. An overflow port 211 is provided on one side of the upper part of the water reservoir 21. The overflow port 211 is connected to the municipal rainwater pipe network. When the liquid level of the rainwater in the water reservoir 21 is higher than the overflow port 211, the rainwater flows into the municipal rainwater pipe network from the overflow port 211.

[0035] In one embodiment, the water reservoir 21 is further provided with an inspection port, and the inspection port is provided with an inspection door to facilitate cleaning of the water reservoir 21 .

[0036] An inspection port 23 is provided at the top of the pump station 22 for inspecting the equipment in the pump station 22. A water pump 221 and a water purification system 222 are provided in the pump station 22. The pipe connected to the water inlet of the water pump 221 extends into the water reservoir 21. The pipe connected to the water outlet of the water pump 221 is connected to the water purification system 222. The water purification system 222 is connected to the irrigation system and the drainage blind pipe 3 through a pipeline. The water pump 221 and the water purification system 222 are used for rainwater circulation, and the purified rainwater can be lifted to the top for watering greenery or replenishing the internal water source of the dry creek.

[0037] The working principle of the utility model is:

[0038] When it rains, the water purification system 1 collects rainwater, part of which is purified naturally and infiltrates into the groundwater, and part of which is filtered by the water purification system 1 and discharged into the pre-buried water storage structure 2 through a pipe. Part of the rainwater in the water storage structure 2 is used as the irrigation water source for public green spaces in the local area, and the other part of the excess rainwater is directly discharged into the municipal rainwater pipe network. The water pump 221 and the water purification system 222 in the water storage structure 2 are used for rainwater circulation, and the purified rainwater can be lifted to the top for watering greenery or replenishing the water source inside the dry creek. The dry creek and the pool are combined to create a waterless "dry creek" with a dry riverbed under fine weather conditions; and a natural micro-wetland is created under rainy weather conditions, and the micro-wetland landscape continues to be maintained for 3-7 days after the rain. After the rainwater completely infiltrates and flows into the groundwater, it returns to the landscape form of the "dry creek".

[0039] Integrate flood control and ecological landscape to form a controllable artificial lake management system, purify runoff water through filtration and infiltration, utilize a variety of rainwater collection techniques, and adopt green space purification, collection ports, storage pool ecological techniques, artificial wetlands and other methods to purify water bodies, ultimately achieving greening irrigation, road washing, landscape water replenishment and other utilization methods.

[0040] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. Structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to conventional means in the field unless otherwise specified and limited.

Claims

1. A dry creek construction system with rainwater collection and recycling, characterized in that: It comprises a water purification system (1) and a water storage structure (2), wherein the water purification system (1) is connected to the water storage structure (2) via a pipeline; The pipeline comprises a drainage blind pipe (3) and a water inlet pipe (4) connected to the drainage blind pipe (3); the water storage structure (2) comprises a water reservoir (21) and a pump station (22); the water reservoir (21) is connected to the water inlet pipe (4); a water pump (221) and a water purification system (222) are arranged in the pump station (22); the pipeline connected to the water inlet of the water pump (221) extends into the water reservoir (21); and the pipeline connected to the water outlet of the water pump (221) is connected to the water purification system (222).

2. A dry creek construction system with rainwater collection and recycling according to claim 1, characterized in that: The water purification system (1) comprises a dry pond (11), wherein a crushed stone layer (12), a first geotextile (13), a yellow sand layer (14), a second geotextile (15), a graded crushed stone layer (16) and a stream pit stone layer (17) are arranged in sequence from bottom to top in the dry pond (11) for filtering rainwater.

3. The dry creek construction system with rainwater collection and recycling according to claim 2 is characterized in that: An inwardly concave aquifer (18) is formed above the stream pit stone layer (17).

4. The dry creek construction system with rainwater collection and recycling according to claim 3 is characterized in that: The drainage blind pipe (3) is located in the gravel layer (12), and a pipe wall of the drainage blind pipe (3) is provided with a plurality of openings.

5. The dry creek construction system with rainwater collection and recycling according to claim 4 is characterized in that: The outer side of the drainage blind pipe (3) is coated with non-woven fabric (5).

6. The dry creek construction system with rainwater collection and recycling according to claim 5 is characterized in that: Both ends of the drainage blind pipe (3) are sealed.

7. The dry creek construction system with rainwater collection and recycling according to claim 1 is characterized in that: An overflow port (211) is provided at one side end of the upper portion of the water storage tank (21), and the overflow port (211) is connected to the municipal rainwater pipe network.

8. The dry creek construction system with rainwater collection and recycling according to claim 1 is characterized in that: The top of the pump station (22) is provided with an inspection port (23) for inspecting the equipment in the pump station (22).

9. The dry creek construction system with rainwater collection and recycling according to claim 6 is characterized in that: The drainage blind pipe (3) and the water inlet pipe (4) are connected via a pipe joint.

10. The dry creek construction system with rainwater collection and recycling according to claim 7, characterized in that: The water reservoir (21) is also provided with an inspection opening, and the inspection opening is provided with an inspection door.

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