Rain flood regulation and storage facility for sponge city

Abstract

The utility model relates to a rain flood regulation and storage facility for a sponge city, which comprises a shell, a reservoir, a water purification tank and a municipal water tank, a greening water leading-out pipeline is arranged at the bottom of the water purification tank, and the technical key points are as follows: the water purification tank is fixedly provided with a horizontal partition plate above the inner end of the greening water leading-out pipeline, and the horizontal partition plate is provided with a water through hole group; a lower intercepting net is laid on the upper surface of the horizontal partition plate, a gravel intercepting and purifying layer is laid above the lower intercepting net, an upper intercepting net is laid above the gravel intercepting and purifying layer, a backwashing pipe bundle is embedded in the gravel intercepting and purifying layer, an inlet of the backwashing pipe bundle is connected with a vertical pipe, and the upper end of the vertical pipe is connected with an outlet of a first lifting pump. An inlet pipeline of the first lifting pump is inserted into the lower part of the municipal water tank, a water pumping pipeline is additionally arranged in the water purifying tank, and the upper end of the water pumping pipeline penetrates through the top of the purifying tank and is connected with an inlet of the second lifting pump. According to the facility, smooth water outlet of greening water is guaranteed, blockage is avoided, meanwhile, intercepted sundries are convenient to clean, and the purification effect is guaranteed.

Description

Technical Field

[0001] The utility model relates to a water source regulation facility, in particular to a rainwater and flood regulation facility for a sponge city. Background Art

[0002] The so-called "sponge city" can retain rainwater like a sponge and utilize the rainwater for urban greening water and the like, and at the same time avoid urban waterlogging.

[0003] For example, CN 217079064 U discloses a rainwater and flood regulation facility for a sponge city, which includes a reservoir, a purification tank, a municipal water tank, a liquid level gauge and a hydraulic rotary weir. Liquid level gauges are provided at the upper ends of the reservoir and the purification tank. The reservoir, the purification tank and the municipal water tank are separated by hydraulic rotary weirs; the liquid level gauge is electrically connected to the hydraulic rotary weir correspondingly; the reservoir is provided with a water inlet, the purification tank is provided with a first water outlet pipe, and the municipal water tank is provided with a second water outlet pipe. The purpose of this rainwater and flood regulation facility is to realize the storage and allocation ability of rainwater by setting a liquid level gauge and a hydraulic rotary weir to cope with different weather conditions and relieve the drainage pressure and water use pressure. However, there are still the following problems: 1. The upper part of the inlet of the first water outlet pipe is an impurity purification layer, which is extremely easy to be blocked; 2. After the impurity purification layer intercepts sediment and sundries, it becomes thicker and thicker. If it is not cleaned for a long time, the purification effect will be affected. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a rainwater and flood regulation facility for a sponge city with reasonable structure and reliable use to solve the above problems, ensure smooth water outlet for greening water, avoid blockage, and at the same time, facilitate the cleaning of intercepted sundries and ensure the purification effect.

[0005] The technical solution of the utility model is as follows:

[0006] A rainwater storage and regulation facility for sponge cities, comprising a housing, a reservoir, a purification tank, and a municipal water tank arranged in sequence in the housing. Drainage pipelines are provided at the bottoms of the reservoir and the municipal water tank. An inlet pipeline is provided at the upper part of the reservoir, a drainage pipeline is provided at the upper part of the municipal water tank, and a greening water extraction pipeline is provided at the bottom of the purification tank. The technical key points are as follows: A horizontal partition is fixed above the inner end of the greening water extraction pipeline in the purification tank. A water passing hole group is provided on the horizontal partition. A lower interception net is laid on the upper surface of the horizontal partition. A gravel interception and purification layer is laid above the lower interception net. An upper interception net is laid above the gravel interception and purification layer. An anti-flushing pipe bundle is buried in the gravel interception and purification layer. An anti-flushing hole group is provided on the anti-flushing pipe bundle. The inlet of the anti-flushing pipe bundle is connected to a riser pipe. The upper end of the riser pipe passes through the gravel interception and purification layer, the upper interception net, and the top of the purification tank and is connected to the outlet of a first lift pump. The inlet pipeline of the first lift pump is inserted into the lower part of the municipal water tank. Another water extraction pipeline is provided in the purification tank. The upper end of the water extraction pipeline passes through the top of the purification tank and is connected to the inlet of a second lift pump.

[0007] In the above rainwater storage and regulation facility for sponge cities, a plurality of first gate valves are provided on the partitions of the reservoir and the purification tank, and a plurality of second gate valves are provided on the partitions of the purification tank and the municipal water tank to open an appropriate number of first gate valves and second gate valves according to the liquid level information fed back by the liquid level gauge.

[0008] In the above rainwater storage and regulation facility for sponge cities, a plurality of branch inlets are provided at the lower end of the water extraction pipeline, and each branch inlet is close to the upper interception net.

[0009] In the above rainwater storage and regulation facility for sponge cities, the aperture of the upper interception net is larger than that of the lower interception net.

[0010] In the above rainwater storage and regulation facility for sponge cities, filter nets are respectively provided on the inlet sides of the first gate valve and the second gate valve.

[0011] In the above rainwater storage and regulation facility for sponge cities, liquid level gauges are respectively provided in the reservoir and the purification tank.

[0012] The beneficial effects of the present utility model are as follows:

[0013] 1. The horizontal partition is used to support the gravel interception and purification layer, and the lower interception net is used to intercept the substances in the gravel interception and purification layer from sinking, ensuring a high cleanliness of the water area below the horizontal partition, thus ensuring smooth water discharge from the greening water extraction pipeline and avoiding blockage.

[0014] 2. After working for a period of time, close the first gate valve and the second gate valve, start the first lift pump, introduce the water in the municipal water pool into the backwash tube bundle, and then inject it into the gravel interception and purification layer through the backwash hole group, so that the intercepted sundries in it overflow the upper interception net. Then start the second lift pump to draw out the water mixed with a large amount of sundries from the purification pool, realizing the function of cleaning the gravel interception and purification layer. The setting of the upper interception net prevents gravel particles from being drawn away and ensures the purification effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the present utility model;

[0016] Figure 2 is Figure 1 is the right view of the reservoir.

[0017] In the figure: 1. housing, 2. reservoir, 3. first gate valve, 4. second lift pump, 5. water extraction pipeline, 6. purification pool, 7. first lift pump, 8. inlet pipeline, 9. municipal water pool, 10. drainage pipeline, 11. sewage discharge pipeline, 12. second gate valve, 13. riser pipe, 14. backwash tube bundle, 15. greening water extraction pipeline, 16. horizontal partition board, 17. gravel interception and purification layer, 18. water inlet pipeline, 19. upper interception net, 20. lower interception net, 21. sewage discharge pipeline, 22. partition board, 23. filter screen. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The present utility model will be described in detail according to the accompanying drawings of the specification.

[0019] As Figure 1 , Figure 2 shown, the rainwater storage and regulation facility for sponge city includes a housing 1, a reservoir 2, a purification pool 6, and a municipal water pool 9 arranged in the housing 1 in sequence. The bottoms of the reservoir 2 and the municipal water pool 9 are respectively provided with sewage discharge pipelines 21, 11. The upper part of the reservoir 2 is provided with a water inlet pipeline 18, the upper part of the municipal water pool 9 is provided with a drainage pipeline 10, and the bottom of the purification pool 6 is provided with a greening water extraction pipeline 15.

[0020] Among them, a horizontal partition board 16 is fixed above the inner end of the greening water extraction pipeline 15 in the purification pool 6. The horizontal partition board 16 is provided with a water passing hole group. A lower interception net 20 is laid on the upper surface of the horizontal partition board 16. A gravel interception and purification layer 17 is laid above the lower interception net 20, and an upper interception net 19 is laid above the gravel interception and purification layer 17. The aperture of the upper interception net 19 is larger than that of the lower interception net 20.

[0021] An anti-flushing pipe bundle 14 is buried in the gravel interception and purification layer 17. An anti-flushing hole group is provided on the anti-flushing pipe bundle 14. The inlet of the anti-flushing pipe bundle 14 is connected to a riser pipe 13. The upper end of the riser pipe 13 passes through the gravel interception and purification layer 17, the upper interception net 19 and the top of the purification pool 6 and is connected to the outlet of the first lift pump 7. The inlet pipeline 8 of the first lift pump 7 is inserted into the lower part of the municipal water pool 9. Another water extraction pipeline 5 is provided in the purification pool 6. The upper end of the water extraction pipeline 5 passes through the top of the purification pool 6 and is connected to the inlet of the second lift pump 4. The lower end of the water extraction pipeline 5 is provided with a plurality of branch inlets, and each branch inlet is close to the upper interception net 19.

[0022] In this embodiment, a liquid level gauge is respectively provided in the storage pool 2 and the purification pool 6. A plurality of first gate valves 3 are provided on the partition plate 22 of the storage pool 2 and the purification pool 6. A plurality of second gate valves 12 are provided on the partition plate between the purification pool 6 and the municipal water pool 9 to open an appropriate number of first gate valves 3 and second gate valves 12 according to the liquid level information fed back by the liquid level gauge. Filter meshes 23 are respectively provided on the inlet sides of the first gate valve 3 and the second gate valve 12.

[0023] Working process:

[0024] Rainwater enters the storage pool 2 through the water inlet pipeline 18, and then enters the purification pool 6 through the first gate valve 3. The water body is filtered and purified by the gravel interception and purification layer 17 and reaches below the horizontal partition plate 16, and then is discharged through the greening water extraction pipeline 15. When the water level reaches the set upper limit of the liquid level gauge, the second gate valve 12 is opened to introduce the water body into the municipal water pool 9 to realize the regulation function.

[0025] After working for a period of time, the first gate valve 3 and the second gate valve 12 are closed, and the first lift pump 7 is started to introduce the water body in the municipal water pool 9 into the anti-flushing pipe bundle 14, and then inject it into the gravel interception and purification layer 17 through the anti-flushing hole group, so that the intercepted sundries in it overflow the upper interception net 19. Then the second lift pump 4 is started to lead out the water body mixed with a large amount of sundries from the purification pool 6 to realize the function of cleaning the gravel interception and purification layer 17.

[0026] The above has described the embodiments of the present invention in detail, but the content described is only the preferred embodiments of the present invention and cannot be considered as limiting the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the creation of the present invention shall still fall within the scope covered by this patent.

Claims

1. A rainwater storage and regulation facility for a sponge city, comprising a housing, a reservoir, a purification tank, and a municipal water tank that are sequentially arranged in the housing. Drainage pipelines are provided at the bottoms of the reservoir and the municipal water tank. An inlet pipeline is provided at the upper part of the reservoir, a drainage pipeline is provided at the upper part of the municipal water tank, and a greening water extraction pipeline is provided at the bottom of the purification tank. It is characterized in that: A horizontal partition is fixed above the inner end of the pipeline for leading out the greening water in the purification tank. A water passing hole group is provided on the horizontal partition. A lower interception net is laid on the upper surface of the horizontal partition. A gravel interception and purification layer is laid above the lower interception net. An upper interception net is laid above the gravel interception and purification layer. An anti-flushing pipe bundle is buried in the gravel interception and purification layer. An anti-flushing hole group is provided on the anti-flushing pipe bundle. The inlet of the anti-flushing pipe bundle is connected to a riser pipe. The upper end of the riser pipe passes through the gravel interception and purification layer, the upper interception net and the top of the purification tank and is connected to the outlet of the first lift pump. The inlet pipeline of the first lift pump is inserted into the lower part of the municipal water tank. Another water extraction pipeline is provided in the purification tank. The upper end of the water extraction pipeline passes through the top of the purification tank and is connected to the inlet of the second lift pump.

2. The rainwater storage and regulation facility for sponge city according to claim 1, characterized in that: A plurality of first gate valves are provided on the partitions of the storage tank and the purification tank. A plurality of second gate valves are provided on the partition between the purification tank and the municipal water tank, so as to open an appropriate number of first gate valves and second gate valves according to the liquid level information fed back by the liquid level gauge.

3. The rainwater storage and regulation facility for sponge city according to claim 1, characterized in that: A plurality of branch inlets are provided at the lower end of the water extraction pipeline, and each branch inlet is close to the upper interception net.

4. The rainwater storage and regulation facility for sponge city according to claim 1, characterized in that: The aperture of the upper interception net is larger than that of the lower interception net.

5. The rainwater storage and regulation facility for sponge city according to claim 2, characterized in that: Filter nets are respectively provided on the inlet sides of the first gate valve and the second gate valve.

6. The rainwater storage and regulation facility for sponge city according to claim 1, characterized in that: Liquid level gauges are respectively provided in the storage tank and the purification tank.

Images